Application is not working in Enterprise Portal (Access Denied)

Hi,

I have created one application..........This application contains one DropDownByKey element whenever i run this application all the material numbers are automatically populated from R/3....... once i selected material number all the fields related to that material number are displyed in my view..... It is working fine in my NWDS(WebDynpro).....

I have integrated this application into Enterprise Portal their i am not getting any data into DropDownList box from R/3.... when i run the application i am getting "ACESS DENIED" error ............

But i have another applicaton(FlightList) which is already integrated into Enterprise Portal..... its working fine......This is also accessing data from R/3.... but its working......

The material application is not working........

Please Help Me.....

Thanks & Regards

Ravi Shankar B

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